The use and manufacturing process of color printing woven polypropylene bag
The Use and Manufacturing Process Of Color Printing Woven Polypropylene Bags
Color-printed woven bags are one of the commonly used woven polypropylene bags in our lives, and can be seen in food, construction, chemical, feed, express delivery and other industries.
The purpose and scope of color printing woven polypropylene bags are:
1. Food packaging: rice, flour and other packaging. It is also used in the packaging of whole grains, with vivid color printing patterns, which instantly improves the aesthetics of the product.
2. Packaging for building materials: mortar, putty powder, gypsum powder, etc.
3. Chemical industry, feed, express delivery, online sales: these fields also have a very wide range of applications.
The production process and process of color printing woven polypropylene bags are as follows
The first step is whether there is a color printing bag design document:
Enterprises have designs: Some enterprises have their own packaging designers or look for other design companies to do the design, then hand the design drawings to the packaging bag production enterprises, we will carry out color printing layout design.
The company has no design: if there is no design drawing, you need to prepare a copy and provide it to us for design.
The copy that needs to be prepared mainly includes information that must be printed in color: product name, logo, trademark, net content, manufacturer information (including the full name and address of the manufacturer, contact information, etc.) product standard number, these copy information must be carefully checked in detail, must not have error.
Then we will design by our designer, and then hand over the designed drawings to you for confirmation, and carefully check the above information again. Design and check to confirm, there may be several back and forth between, the time is not necessarily. If there is no problem, proceed to the next step.
The second step, the color printing plate of the packaging bag:
The color printing bags are all made of metal, with very high precision. According to the requirements of design drawings, materials and craftsmanship, printing and typesetting and production of printing plates are carried out. This takes about 5 to 7 days. Some large-size versions of special models even take about 15 days.
The third step is to produce color printing film:
At present, the mainstream color printing substrates on the market include: OPP film, pearl film, matte film, paper imitation film, etc.:
OPP film substrates are widely used in construction and building materials packaging, flour, fertilizer, feed, online sales packaging and other fields, and also the lowest price among these types of substrates.
The surface of the base material of the pearlescent film itself has a pearl texture, and the material is milky white and opaque. It is widely used in chemical industry, medicine, pet food and other fields, and is also used in other fields according to customer requirements.
Pearlescent film base material and paper imitation film belong to surface printing and OPP film and matte film are different from inside printing, and the printing plates between them cannot be used universally.
The matt film substrate has a foggy transparency, and most of the printing is used with white ink. After adding a white background, the matte film is closer to the texture of the paper. Because it needs a layer of white ink, the price is relatively higher, and it is widely used in flour. , Rice grain and other packaging, construction and building materials packaging are also widely used.
The printing process of the paper-like film substrate is like surface printing like the pearlescent film, and the field of texture of the paper itself is also similar to the matte film.
The fourth step, compound:
Use the compounding machine to paste the printed substrate with the woven cloth by heating the polypropylene particles. According to the different methods, it is divided into: single color single complex, single color double complex, double color double Complex three.
The fifth step, the production of finished products:
Most of the products are made into finished products through two processes: cutting and sewing. Depending on the equipment used, there are cutting and sewing machine, cutting machine, single sewing machine and so on.
