Environmental protection handbag printing and design overview (below)

  Fourth, the common size of handbags

     See the table:

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Table 2 : Common Sizes of Bags

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     The recommended size is mainly designed from the common paper format to ensure the maximum utilization of the paper.

     Fifth, the preparation of environmental protection bag design

     Before designing a bag, the most important thing we must do is to fully understand the design goals. Briefly describe the issues that you need to understand or clarify:

1 , understand the application characteristics

Different products have different characteristics such as weight, volume, strength, light protection, moisture resistance, and application methods. These characteristics determine the packaging materials and methods and should meet the requirements of product characteristics.

2 , understand the use of objects

Due to the customer's gender, age and cultural level, the economic situation is different. They formed a difference in the subscription of goods, so the product must be targeted. Only by grasping the object of use of the product can it be possible to accurately design the packaging bag design.

3 , understand the release method

Bags can only become promotional items in the true sense of the word by means of distribution. There are many ways to distribute handbags, which means that the design forms and methods adopted should be different.

4 , understand the production expenses

Clearly understand the design's target production expenses and control the design within the achievable range. Every customer wants to obtain more profits with less investment. This is undoubtedly a huge challenge to the design of handbags .

5 , understand the design background

First, the customer's requirements for packaging bag design ;

The second is whether the company has a CI plan and it is necessary to grasp the relevant provisions for corporate identification .

After a thorough understanding of the design conditions, the next step is to conduct the necessary market research to improve the design results.

Market research is an important part of the bag design process. It enables handbag designer to master many information and materials related to the design of the bag, and is more conducive to the development of a reasonable bag design scheme . It includes the following points :

1 , understanding of product market needs

From the perspective of marketing, the needs and desires of customers are the center and starting point of corporate marketing activities . Bag designers should find out the target consumer groups of the products according to the needs of the market, so as to formulate product positioning and packaging styles and predict Potential audience size and aesthetic life .

2 , understanding of the status of the packaging market

Based on the current status of the market for handbags, the survey includes analysis of the channels for distribution of goods and the opinions of the audience to understand the current status and development trend of the product bag design and use it as a guideline for bag designer evaluation. Induced the most popular bag style

3 , understanding of the same type of promotional handbags

Timely grasp of commercial information of similar competitive products, which is an essential and important part of research for bag designers . From the perspective of bag design, packaging materials for competitive products, packaging modeling, packaging structure, packaging colors, Packaging graphics and packaging text, etc., for analysis, will bring great benefits to the upcoming handbag design.

  Six, handbag design printing and production skills

     Although there are many types of portable paper bags, the vast majority of portable paper bags on the market are still rectangular in shape and shape, and single orders are often printed in small quantities. Generally, offset printing is used to complete printing. Its production process is relatively simple, and production can be completed according to the commonly used process methods of offset printing and postpress processing. However, if we can make some changes to the processing methods for the special features of paper bags, we can save costs and increase production efficiency. Let's talk about some experiences in this area for your reference.

(I) Reuse of molded plates

In most cases, the portable paper bag is not a direct packaging product, but the product is first packed in a paper box or a plastic bag, and then placed in a hand-held paper bag, so as to be portable and look good, which makes the customer's hand bag The dimensional accuracy requirements are often less stringent than the trays. According to the characteristics of a portable paper bag, the author has accurately summarized the length, width, and height of the hand-made paper bags that we have produced in the past and classified them according to the height of the hand-held paper bags.

For example, the height of a hand-held paper bag is between value="25" unitname="cm"> 25cm to value="30" unitname="cm"> 30cm , and all portable paper bags in this height range Molded plates are numbered, placed under custody, and the precise size (including length, width, and height) of the molded plate corresponding to the serial number is written in the log book, the typesetting mode of the molded plate, the mold edge to the handle of the molded plate. The distance between the line and the indentation line. When customers print portable paper bags, they first look up the statistics and have the same size. If there are only similar-sized hand-held paper bags, they can negotiate with customers whether they can print at similar sizes. If they are accepted by customers, Using this size for plate making, printing, and then indentation processing using the original die plate, saves the cost and time for making a die plate. For enterprises with large paper bag production, this can achieve considerable economic benefits. For the portable paper bags that must be made into new moulded plates, the new molded plates should try to maintain a uniform typesetting method, and the distance from the edge of the mouth to the indentation line at the handle should be kept uniform. Reuse later.

(b) Molding method

1 , use cardboard instead of indentation line

Most of the paper used for making paper bags is coated paper or kraft paper with a basis weight of less than value = "250" unitname = "g"> 250g /m2 . In the end, folding is generally done manually. Therefore, indentation processing of paper bags generally does not require indentation lines to be used in conjunction with steel wire, but use cardboard instead of indentation lines. The specific operation is as follows.

( 1 ) Clean the bottom of the die-cutting machine first, stick the double-sided adhesive, and then lay a layer of cardboard with a basis weight of approximately 500" unitname="g"> 500g /m2 , making it firmly sticky. On the floor.

( 2 ) Using a larger molding pressure, the die cutter is used to indent the cardboard. After the cardboard has undergone multiple pressures, deep groove marks appear. Care must be taken not to crack the cardboard.

( 3 ) Adjust the molding pressure, put the paper, and press the fold marks. This crease needs to have a certain depth, so that the manual folding is not easy to run, but not too deep, so that the paper is broken after being crushed or folded, or because the plastic deformation of the crease is too heavy, resulting in the portable paper bag in the future The use of easy to break, affect the service life. Especially when the kraft paper is indented, the kraft paper is more brittle and the toughness is inferior to the coated paper, and the molding pressure must be properly grasped.

In order to make the paper bag easy to fold, but not to fracturing, you need to pay attention to the following points.

( 1 ) The pad must have sufficient thickness;

( 2 ) Press the pad paper out of the groove before molding;

( 3 ) The pressure during formal moulding should be appropriate;

( 4 ) Along the direction of the paper web, the paper is folded better and the molding pressure can be smaller; while perpendicular to the direction of the paper web, the paper is difficult to fold, and the molding pressure can be increased locally.

2. Indentation on the back of the paper

When molding by folding after molding, some indentation lines fold the printed surface outward, and some indentation lines fold the printed surface inward. The most likely to break during use is the four sides and four vertical lines at the bottom of the rectangle. These folds are folded outwards. In order to reduce the damage caused during the folding process of the portable paper bag, the indentation of the paper bag should adopt the back indentation, that is, when the indentation is made, the steel wire is in contact with the back of the paper so that the crease protrudes toward the printing surface. Since the indentation line should be precisely aligned with the frontal image of the paper, this requires that the edge of the crepe and the side of the side-edge of the printing should be consistent with the edge of the crepe and the edge of the side-edge of the embossing.

(three) paper opening method

Because the printed sheet has value="1" unitname="cm"> about 1cm width of the mouth is not printed, and the scope of the finished product also requires a rule line, color standard, etc. , so for the general print, are the first The paper is made larger than the finished product. After the post-press processing, the paper scraper or the die-cutting machine is used to cut off the surrounding waste paper. If the indentation processing of the paper bag is to replace the indentation line with a cardboard, the die cutting and the indentation should not be carried out at the same time, so the hand bag is generally only indented and not die-cut. If the paper edge is cut with a paper cutter before indentation, the accuracy of the indentation will be affected. If you leave it to be pressed after cutting, it will not be easy to trim because the paper is deformed when it is molded. Therefore, the commonly used method is to cut the paper into the unfolded size of the finished product before printing. After the printing, only the indentation processing is performed, and cutting or die-cutting is no longer required.

The length, width and height, respectively a, b, h rectangular paper bags, the finished dimensions a, b, h and finished expanded size A, there is a conversion between B: after deployment length A = 2 × (a + b) + side sticky mouth, width after expansion B = fold +h + bottom, which side sticky mouth is generally value = "2" unitname = "cm"> 2cm , folding is generally value = "5" unitname = Cm> 5cm . When the paper size is tight, the side sticks and folds can be slightly narrower. If the paper bag is very large, it should be slightly wider. The bottom of the portable paper bag = 0.5 x b + bottom of the sticky mouth, the bottom of the sticky mouth is generally value = "1" unitname = "cm"> 1cm or so, if the large portable paper bag can also be wider.