Company Profile
The total area of the factory is 32666 square meters, with a production area of 18000 square meters. With excellent quality and good reputation, our factory has won the general praise of customers. Our main business is to manufacture flexible packaging for food and high performance environmental protection shrink film labels.
Why Choose Us
Our Factory
Qingdao Chengyue Packaging Technology Co., Ltd. was established in 2003. The factory is located at No. 18, Kongjiaohe 1st Road, Jili District, Qingdao City, Shandong Province, China, covering a total area of 22,700 square meters, with a production area of 7,400 square meters.
Our Certificates
Our company is certified with a food plastic packaging production license (QS certificate) and has obtained ISO 9001 quality management system certification.
Our Products
The company's main products include high-performance food plastic packaging composite films, high-energy barrier packaging bags, and garment bags. According to customer requirements, we can produce automatic packaging film rolls to meet the needs of clients in the United States, Japan, South Korea, and other regions.
Pre-Sales Service
Our professional team provides detailed product information and usage recommendations to help customers choose the most suitable soft packaging products for their needs. We offer telephone consultations, online customer service, email communication, and face-to-face interactions.
What is Pinch Bottom Pouch?
Pinch bottom pouches are the perfect blend of practicality and eye-catching appeal. These pouches feature a stable bottom that takes shape as you fill them, ensuring an attractive display that catches the eye at any point of sale. Our pinch bottom pouches offer excellent sealing properties that keep your products safe from external agents. Choose from a variety of barrier options and finishes for packaging that’s both secure and visually stunning.
Customizable features include a high barrier, hermetic bottom closure, tear notches, and vent holes.
Benefits of pinch bottom pouch
Are strong
The combination of pinch-bottom and woven polypropylene are an unbeatable combination of strengths. The bottom seal is strong enough to stay secure during fill, transport, shelving, the trip home after sale and in-home storage and use.
Are durable
The pinch-bottom seal provides enhanced resistance to leaks and infestation. This seal is engineered to anticipate all of the things that could go wrong and assure manufacturers, distributors and end-consumers that the product stays inside and protected from the elements outside the pinch-bottom bag.
Keep product dry
Pinch-bottom BOPP bags are a better barrier against moisture and humidity. With the thermo-sealed bottom and corners, your product is hermetically sealed from destructive humidity as it moves through the distribution channel as well as the occasional exposure to standing water and rain. No bag is 100% waterproof, but pinch-bottom BOPP bags come as close as available using modern packaging techniques.
Offer optimal palletization
The flat bottom also makes it easier for the bags to be stacked in a stable pallet arrangement. Your product will reach its destination with minimal disturbance and looking great for its retail presentation.
Pinch bottom pouch stand out on the shelf
The broader bag base can allow your package to stand out. When stacked on shelves, your branding and product specifications are highly visible. The flat bottom also makes it easy for the bag to be stood up on its end at retail, giving it an even more commanding presence in front of end-use consumers.
AD Star Bags, because of their valve closure, can be filled and emptied more quickly than pinch bottom pouch can. The valve design allows for quick and easy filling using mechanical or automated systems, making them perfect for use in high-throughput manufacturing environments.
Powders and granules, which have a lower bulk density than other materials, work well in pinch bottom pouch. However, AD Star Bags are often used for heavier items, such as industrial minerals and aggregates, because of their increased density.
AD Star Bags have excellent barrier characteristics, making them ideal for storing and transporting perishable goods that are particularly vulnerable to moisture and contamination. The woven polypropylene fabric’s laminated layer offers superior moisture resistance and blocks the infiltration of dust and other particulates.
When it comes to transportation and handling, AD Star Bags are highly recommended due to their durability and toughness. Because of their durability, they can withstand being stacked on pallets, transported across long distances, or kept under harsh conditions.
While both tote styles allow for printing and branding, pinch bottom pouch often have greater design flexibility in this regard. They are widely used in the retail industry because of the complexity of their patterns, the number of colors used, and the amount of information included.
Pinch-bottom bags are more eco-friendly than other types of bags since they are often manufactured from paper or paperboard. They fit nicely with eco-friendly ideals since they can be recycled and broken down naturally. The plastic (polypropylene) used to make AD Star Bags may be recycled in certain areas, however, they may not be as biodegradable as paper bags.
Type of Pinch Bottom Pouch




Flat Bags
Known sometimes as flat paper bags, flat bags are among the simplest and most practical kinds of paper bags available. It’s really simple to make flat bags without the need for expensive machinery or specialized equipment. These bags are manufactured from a single piece of paper that has been cut to the desired size—usually kraft paper. To build the bag, the edges are folded and bonded with heat or adhesive, leaving the top open to be filled.
D Cut Paper Bag
Die-cut paper bags, also known as D-cut paper bags, are a popular choice among businesses looking to add a unique touch to their packaging. These bags are incredibly simple to open and close thanks to a unique D-shaped incision at the top. They resemble flat bags in appearance, but have a diagonal incision at the top to make a larger aperture for easy access to the contents.
Pinch Bottom Bag
Pinch bottom bags, also known as pinched bottom bags or open mouth bags, are typically made from high-quality kraft paper. They are characterized by the unique bottom seal. These bags are formed by pinching together the bottom of the bag and sealing it, creating a flat base that allows the bag to stand upright when filled, providing a convenient and stable packaging solution. This feature makes pinch bottom bags ideal for packaging a wide range of products, from food items to retail merchandise.
Mailing Bags
Mailing bags, also called envelopes or shipping bags, are made from strong and durable kraft paper. With the self-adhesive strip on these brown paper bags, closing them securely without additional tape or staples is a breeze. This offers a low-cost, lightweight method of shipping item protection. Mailing bags were originally mainly used by the postal service for small items, documents, and letters. In recent times, mailing bags have become increasingly in demand, mainly due to the rapid growth of online shopping. The global mailing bag market, according to a report by Mordor Intelligence, was estimated to be worth 9.03 billion dollars in 2020 and is expected to rise at a compound annual growth rate of 4.8% from 2021 to 2026, to reach 11.98 billion dollars. Businesses may easily create bags in different sizes and thicknesses to satisfy the increasing demand from the postal service and e-commerce sectors by streamlining their production process and utilizing sophisticated mailing bag manufacture machines.
Easy Open Feature for Pinch Bottom Pouch
Due to its simple and practical concept, this convenient opening feature is used in many different packaging applications: for food, animal feedstuff and pet care products, dry powders, and bulk goods, in the industrial and end-consumer sectors, etc. For common easy open bags that hold larger quantities of content and thus weigh a lot, however, the packaging material has to be very thick and heavy to avoid breakage and provide adequate protection. Higher bag weight means more raw material input at the beginning of the bag’s life cycle and more waste at the end.
The great advantage of PP*STAR poly-woven bags is that they have a low bag weight but are very strong. Due to their special material combination, they can hold large quantities of heavy content without tearing or breaking even when dropped. After a detailed market analysis and feedback from end-users, Starlinger developed the Easy Open feature to make PP*STAR pinch bottom pouch even more consumer-friendly.
Because of the exceptional strength of the woven polypropylene-BOPP composite, a tool such as scissors or a knife is needed to open a normal PP*STAR bag. In this regard, Easy Open proved to be the most convenient and cost-saving opening solution: The Easy Open strip can be produced inline, avoiding extra production steps and consequently production costs. Thus it integrates perfectly into the PP*STAR concept. Alternative reseal features are not only more expensive, they also require additional production steps and reduce the bag production speed significantly.
Why are Pinch Bottom Pouch So Popular?
Nowadays, pinch bottom pouch can be seen everywhere in daily life. They are widely used and are warmly welcomed and loved by everyone with their unique functions. Today, we will take you a brief understanding of the bottom pocket.
Pinch bottom pouch is both practical and beautiful. The important thing is that they are portable and environmentally friendly, in line with the current low carbon living requirements. pinch bottom pouch are very strong and durable, both stitching and printing can be printed with more advanced machinery and equipment, and the quality is better than ordinary plastic bags.
The pinch bottom pouch usually has five sides, and the flat bottom end is relatively stable. It is not easy to be scattered in the filling or filling process. It has the characteristics of good environmental protection, improved firmness, stacking stability, and so on, which is conducive to the identification. The pinch bottom pouch can also be used for powder and preservatives, chemical plant powder, concentrated feed, plastic, and other areas of powder and pellet products and other packaging fields.
To improve the properties of plastics, various auxiliary materials need to be added to the polymer, and the various specifications of plastics need to be considered, such as fillers, lubricants, and thickeners, additives, etc. The square bottom bag is also known as an open square bottom bag or single pasting bottom bag. Once filled, align the bottom of the bag, fold and paste to form a rectangle with a firm base paper for added strength. This feature makes it more common in daily life, such as some food packaging and drug packaging, will use this product.
Pinch bottom pouch is warmly welcomed by many customers in daily life. They're not only cheap, but they're also colorful and crucially, they're easy to use. pinch bottom pouch can also be used to pack large items, so many manufacturers use pinch bottom pouch.
Making a Pinch Bottom Pouch
Designing Your Bag
There’s a unique sense of pride in carrying a bag that you’ve designed yourself, one that reflects your personal style and meets your daily needs.
In this creative endeavor, immerse yourself in each design aspect, ensuring your bag isn’t just an accessory, but a reflection of your identity and practical companion.
Procuring Raw Materials
Procuring raw materials is foundational to many manufacturing processes. By selecting the right materials ensures the quality and efficiency of the final product.
A meticulous approach to procuring raw materials not only safeguards production timelines but also influences the product’s overall quality. It’s in these initial steps that the foundation for a successful end product is laid.
Setting Up the Workspace
Setting up the workspace goes beyond just allocating physical space; it encompasses creating an environment that fosters creativity, efficiency, and precision. From the layout of the sewing machines, cutting tables, and tool stations to the strategic positioning of materials and lighting, each element should be meticulously placed to streamline the production process and enhance the overall workflow.
Adequate storage solutions are crucial to ensure materials are protected and easily accessible. Shelving units, drawers, and pegboards can be utilized to organize tools and materials, preventing clutter and potential mishaps.
Machine Set-up
Understanding the type of machinery required is foundational. For example, while basic sewing machines might suffice for simple designs, more intricate patterns might necessitate specialized ones like embroidery or serger machines for specific bag-making needs. Researching and investing in machines tailored to the bag’s design intricacies ensure precision and longevity of the product.
The Production Process
The production process is a systematic series of steps, each vital in bringing a concept to tangible form. This sequential approach ensures consistency, quality, and the timely completion of projects.
In this symphony of stages, each note plays a pivotal role, culminating in a product that resonates with quality, functionality, and style.
Finishing Touches
Finishing touches are the final steps in the production process, adding polish and ensuring the product is ready for the market.
When it comes to completing any project, the finishing touches are like the cherry on top. They elevate the overall appeal, making the difference between good and outstanding.
Final Inspection
Once the crafting journey nears its end, the pivotal stage of quality checks and final inspection comes to the forefront. This phase ensures that the pinch bottom pouch, born out of meticulous planning and crafting, stands true to its promise of durability and aesthetics. Every seam, stitch, and embellishment is scrutinized, and each functional element, such as zippers or pockets, is tested for smooth operation.
Factory Introduction




Qingdao Chengyue Packaging Technology Co., Ltd. was established in 2003. The factory is located at No.18, Kongjiaohe 1st Road, Jili District, Qingdao City, Shandong Province, China, covering a total area of 22,700 square meters, with a production area of 7,400 square meters. With excellent quality and good reputation, our factory has won the general praise of customers. Our main business is to manufacture flexible packaging for food and high performance environmental protection shrink film labels.
FAQ
We're professional pinch bottom pouch manufacturers and suppliers in China, specialized in providing high quality custom design service. We warmly welcome you to wholesale high-end pinch bottom pouch for sale here from our factory.
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