JPS61112635A - Manufacture of paper bag to which embossing processing is executed - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method of manufacturing a paper bag, which is a relatively solid paper bag such as kraft paper, which is embossed.

Conventional techniques and their problems There are four conventional methods for manufacturing embossed paper bags, but they have the following drawbacks.

1) Gravure printing and embossed roll paper
Print with either flexographic printing or offset rotary press 1
When bags are made continuously using a winding type automatic bag making machine - (2) The embossing is enlarged during bag making and there is a problem with the finished size of each bag.

(3) The emboss is enlarged, making it difficult to print, and the finish is unclear.

(4) In order to completely adhere the 161115 parts of the bag, 1) the bag is forcibly stretched and pressurized, so the peaks and troughs of the embossed part become ringed; 2) the embossed flat ITM and offset printing are used to make plain clothes. When bags are made continuously using an automatic bag making machine, - (1) It is difficult to print on the surface of the engesu and the finish is unclear.

(2) In order to completely adhere the adhesive parts of the bag, the bag is forcibly stretched and pressurized, so the peaks and troughs of the embossed part are removed (3) The embossed part is stretched during bag making and the bag is You can have a say in the finished dimensions.

3) When the roll paper is printed with either a gravure printing or flexo printing offset rotary press, and the roll paper is embossed and then continuously made into bags using a roll-up automatic bag making machine, 1 il+ is printed. The rolled paper has a register mark (also called a phototube mark), and if it is embossed first, the peaks and valleys of the embossment will be enlarged or soaked during bag making, resulting in a register mark (also called a phototube mark). (Also called phototube marks) are not detected at a constant width, and the finished dimensions of the paper bag are affected.

(2) In order to completely adhere the embossed parts of the bag, the bag is forcibly stretched and pressurized, which causes the peaks and valleys of the embossment to freeze. (3) The embossment becomes uneven,
Printed items cannot be sufficiently expressed (three-dimensional feel, luxury, beauty, etc.).

(4) The embossing is enlarged during bag making, creating a depth in the finished dimensions.

4) After printing a roll of paper using gravure printing, flexible printing, or a rotary offset press, and applying embossing to the roll of paper, continuous bag making is performed using a flat plate automatic bag making machine (1) Paper It is not generally used because it does not have a feeding function.

Means to Solve the Problem The present invention was invented in view of the above-mentioned circumstances, and involves continuous printing and bag-making processing of relatively strong paper such as kraft paper, and then making the entire bag. The purpose is to provide a method for manufacturing paper bags that is uniformly embossed and takes full advantage of the characteristics of the embossed process, and its features include:) Relatively strong winding of kraft paper, etc. After printing the paper with either gravure printing, 7-rekino printing, or rotary offset press, 1. After continuous bag-making processing of the rolled paper with a winding-type automatic bag-making machine, 1. Steel with a normal pattern engraved in a floating shape. This is a method of manufacturing embossed paper bags in which the paper bag is pressed and shaped by heating a manufacturing roll, etc.) As described in the previous section, relatively strong Chisaka paper such as kraft paper is offset printed. 1 The flat pieces and paper were continuously made into bags using a flat plate type automatic bag making machine and then embossed! ! This also includes the method of delivery.

EXAMPLE To explain an example of the present proposal, a relatively strong roll of paper such as kraft paper is printed with a regular pattern using gravure printing, flexo printing, or an offset rotary press, and a register mark (also known as a phototube mark) is printed. ) are placed on the roll paper at equal intervals.

Next, the register mark mentioned above (also called phototube mark)
Do not hang the roll paper with the mark on the roll-up automatic bag making machine. 1 Continuous bag making process is carried out using the register mark sensor (also referred to as phototube mark sensor) installed on the roll-type automatic bag making machine as a starting point while sensing the mark. 1 Continuous bag making process After completion of the process, a steel roll (a roll made of hard material) with a floating pattern engraved on it is heated to around 130 degrees Celsius, and the bag is made into a bag using the above-mentioned reel-type automatic bag making machine. This is a method of manufacturing embossed paper bags that is molded by applying pressure for about 1 second.It is a method of manufacturing paper bags that are embossed by applying pressure for about 1 second.Offset printing is performed on relatively strong red 100% paper such as kraft paper, and a steel roll with a normal pattern engraved in a raised shape is used. roll made of hard material)
This also includes a method for manufacturing paper bags with an embossed finish, in which the bag is heated to around 130 degrees Celsius and the bag made by the above-mentioned lithographic automatic bag making machine is pressed for about 1 second to form a shape. be.

Effects As mentioned above, in this case, embossing is performed after printing and bag making, so that it provides many effects as described below.

ill It is easy to transport the original paper and cenote it to the machine, and it is easy to handle as there is no enlarging of embossing or rounding of peaks and valleys.

(2) Since the sensing of the register mark (also called phototube mark) is constant - the finished dimension of the bag Ky! There is no LL, and you can complete something with certainty.

(3) Complete embossing can be applied, so 1. Printed items can be fully expressed (three-dimensional feel, luxury, beauty, etc.).

! 4) Since the boiled area is completely adhered first, the entire bag can be embossed completely without any difficulty.

(5) Since it can be completely engraved, it is possible to store fragile items (also referred to as harmful items) in the paper bag and soften the damage caused by the embossed peaks and troughs.

(6) Since it is a simple manufacturing method, it can be provided at low cost without any extra capital investment.

Patent applicant: Watanabe Paper Industry Co., Ltd. Representative Kinzo Watanabe

Claims (1)

[Scope of Claims] 1) Printing a relatively strong paper roll such as kraft paper using gravure printing, flexo printing, or an offset rotary press, and printing the paper roll using a roll-type automatic bag making machine. A method for producing an embossed paper bag, which comprises, after continuous bag-making, heating a steel roll or the like on which a normal pattern is engraved in a floating shape to pressurize and shape the paper bag. 2) The method according to claim 1, wherein a relatively strong planographic paper such as kraft paper is offset printed, and the planographic paper is subjected to continuous bag making processing using a planar automatic bag making machine, and then the embossing is applied. A method of manufacturing embossed paper bags.