Shengchang introduces to you the production process and procedure of octagonal sealed packaging bags

SC Shanghai New Material Tech. Co.,Ltd. specializes in the production of 7-layer, 9-layer, and 11-layer low-temperature co-extruded stretch films, composite roll films, shaped packaging films/bags, PE bags, aluminum foil bags, self-standing zipper bags, spout bags, coffee bags, eight-side sealed slider zipper bags and other series of packaging products. It also specializes in the production and processing of flexible packaging and provides product design technical services. One-stop service for production, processing and transportation, with quality guaranteed, timely delivery and favorable prices!

Next, Shengchang (Shanghai) New Materials Technology Co., Ltd. will introduce to you the production process and procedures of octagonal sealed packaging bags.

The printing and bag-making process of eight-sided sealed packaging bags

1. Plate making: Pattern design ---- Color separation ---- electronic plate making

2. Composite: Outer layer INNER LAYER COMPOSITE ----48 hours to CURE

3. Printing: 5-color intaglio printing for the outer film

4. Bag making: Eight-side sealed packaging bag machine for finished bags

Common materials for octagonal sealed packaging bags

The commonly used composite packaging films for octagonal sealed packaging bags are as follows:

Double-layer plastic composite films: polyester/polyethylene PET/PE, nylon/polyethylene NY/PE

Applicable: General packaging, no need for high-temperature steaming, and the contents can be transparently displayed

2. Double-layer plastic high-temperature autoclave film: polyester/polypropylene PET/CPP, nylon/polypropylene NY/CPP

Applicable: High-temperature steaming and boiling, resistant to temperatures above 110℃-120℃. The contents can be displayed transparently

3. Three-layer aluminum-plastic composite film:

Polyester/aluminium/polyethylene PET/AL/PE Nylon/aluminium/polyethylene NY/AL/PE

Polyester/Aluminium/polypropylene PET/AL/CPP Nylon/aluminium/polypropylene NY/AL/CPP

Applicable: High-end packaging, light-proof, and no display of contents

Notes on the pattern design of octagonal sealed packaging bags

1. Plastic-plastic composite bags: They can be transparent and usually have rich background color patterns on one side. The other side is transparent, allowing consumers to see the beverages inside the bag. When designing, pay attention to the color matching of the patterns and the contents.

2 Aluminum-plastic composite bags: Opaque, allowing for the full utilization of the metallic luster of aluminum during design

3 Easy-tear opening: If a straw is not used, an easy-tear opening should be added during bag-making. When designing the pattern, remind consumers of the position of the easy-tear opening.

4. Cursor requirement: Some bag-making factories need to add a cursor recognition mark (such as a black square) at a certain position on the pattern.

5 Production date description: It is recommended to print the date with a hot coding machine. The hot coding machine has a good effect and is inexpensive. The position of the production date indicated in the pattern design should be consistent with the actual printed date position.

6. Other requirements: The product standards, hygiene permits, shelf life, ingredients, barcodes, etc. are the same as those of general products.