JP5140865B2 - Method for producing moisturizing tissue paper - Google Patents

Description

The present invention relates to a printing is performed, a process for producing a moisturizing tissue paper over to and containing a humectant.

  Conventionally, various types of tissue paper products have been disclosed in which patterns are printed on tissue paper to enhance taste. Further, as an ink to be printed on a thin paper such as tissue paper, a water-soluble ink that is non-toxic and soft after printing and does not cause back-through or curl is disclosed (see Patent Document 1).

  In addition, non-woven fabrics have been widely used as moisturizing wet tissue (see Patent Document 2 and Patent Document 3), and embossing is performed on the non-woven fabric (see Patent Document 2), or as a three-layer structure. A wet tissue with improved properties is disclosed (see Patent Document 3). Furthermore, a thin paper coated with a pattern of a mixture of printing ink and moisturizing liquid is also disclosed (see Patent Document 4).

JP-A-8-176487 JP 2005-146451 A JP 2005-126634 A JP 2001-252214 A

An object of the present invention is to provide a method for producing moisturizing tissue paper having a high taste and a high-class feeling.

In order to achieve the above object, the present inventors have invented a method for producing printed moisturizing tissue paper using a water-soluble ink that does not bleed even when a moisturizing agent is used. The present invention provides the following method for producing a moisturizing tissue paper .

[ 1 ] A plurality of tissue papers are stacked, and among the plurality of tissue papers, surface tissue paper is printed using water-soluble ink, and a moisturizing agent is applied to the surface tissue paper. A method for producing tissue paper, wherein the water-soluble ink is dried in a print drying unit after printing on the plurality of tissue papers, and then the humectant is applied to a non-printing surface of the tissue papers. coated, before Kiho moisturizers after application, the multiple ply tissue paper and sealed with a non-permeable member, the method of manufacturing the humectant said plurality ply of tissue paper whole familiarizing Ru moisturizing facial tissue.

  By printing on tissue paper and including a moisturizing agent, moisturizing tissue paper with enhanced taste and high-quality feeling was obtained. Also, by using a water-soluble ink containing an epoxy-modified polyamide resin as a binder for printing, printing can be prevented from spreading even if a humectant is included, and a hydrophobic substance and a hydrophilic substance can be used as a humectant. By using it, it is possible to prevent the printed pattern from bleeding while maintaining moisture retention. In addition, even when a thin tissue paper contains a moisturizing agent, a moisturizing tissue paper and a method for producing the moisturizing tissue paper were obtained by adjusting the amount of the moisturizing agent to be applied, thereby eliminating the possibility of tearing due to the moisture content.

  Hereinafter, embodiments of the present invention will be described, but the present invention is not limited to the following embodiments, and changes, modifications, and improvements can be added without departing from the scope of the invention.

Shows an example of a printed by moisturizing tissue paper in FIG. FIG. 1A shows a state in which the surface tissue paper 2 and the back layer tissue paper 3 overlap each other. FIG. 1B shows a view in which the surface tissue paper 2 and the back layer tissue paper 3 are separated. It consists of two layers, a surface tissue paper 2 and a back layer tissue paper 3, and a pattern is applied to the surface layer tissue paper 2.

  Two or more tissue papers may be stacked. If three sheets are stacked, the strength when a moisturizing agent is included becomes stronger, which is particularly preferable.

The tissue paper to be used has a sufficient strength even if it contains moisture by the moisturizing agent, while the normal tissue paper is about 11 g / m ² , whereas the moisture retaining tissue paper has a higher basis weight than that. ^preferably, it is ^{15g / m 2 ~18g / m 2} . For example, by setting it to 16.5 g / m < ² >, it becomes a moisturizing tissue paper having a better touch while maintaining strength.

  The softness of the tissue paper is preferably 10 mN / 10 cm to 50 mN / 10 cm, and the optimum condition is 30 mN / 10 cm.

  The tensile strength of the tissue paper is measured according to JIS P8113: 1998, and when the measurement sample is measured at a width of 25 mm, it is preferably 2.0N to 4.0N in the longitudinal direction and 0.5N to 1.5N in the lateral direction.

  The raw materials used for tissue paper are preferably NBKP (softwood bleached kraft pulp) 30-50% and LBKP (hardwood bleached kraft pulp) 70-50%.

  The design and color of printing can be selected according to the user's preference. Various characters may be printed for children, and various pictures, illustrations, marks, symbols, etc. such as floral patterns, animals, plants and other local toys can be selected.

  Since tissue paper is printed, the paper surface is smoothed as a fine crepe so that clear printing can be performed. In addition, a fine crepe improves the touch and gives a high-class feel.

  The ink used for printing is a water-soluble ink containing a pigment, an aqueous varnish (synthetic resin and water), an additive, and containing less than 4% ethanol as a solvent. Moreover, an epoxy-modified polyamide resin is contained as a binder resin. This epoxy-modified polyamide resin reacts with a polyamine component containing polyalkylene polyamine as an essential component and a dicarboxylic acid component under the conditions in which an amino group is present in excess, and further reacts with an epihalohydrin. It is an epoxy-modified polyamide resin obtained.

  If printing is performed on thin paper such as tissue paper using this water-soluble ink, printing can be performed without damaging the soft texture and without causing ink back-through or paper curl.

  Printing is performed only on the surface of the two layers of tissue paper, thereby reducing costs by reducing ink costs, improving productivity, and making effective use of resources. It is supposed to dry quickly.

  The moisturizing agent contains paraben having an action as an antibacterial agent or disinfectant as a hydrophobic substance, and contains glycerin and sorbitol having a moisturizing performance as a hydrophilic substance. Moreover, in order to reinforce the moisturizing effect, a moisturizing enhancing component is contained at a ratio of 10 to 20%. By using this humectant, sorbitol absorbs moisture in the air and keeps it moisturized, and at the same time, glycerin suppresses evaporation of moisture from the tissue paper and maintains appropriate moisturizing properties.

The humectant is contained in the tissue paper so as to contain 7.6 to 10.6 parts by mass with respect to 100 parts by mass of the tissue paper. That is 2.5 to 3.5 / ^{m 2} coated with a moisturizing agent to tissue paper 16.5 g / ^{m 2} of two-ply. If a moisturizing agent is applied in this range, the tissue paper will contain moisture and will not be broken even if the strength is reduced.

The coating amount of the humectant in the tissue paper 16.5 g / ^{m 2} with respect to 2.5 to 3.5 / ^{m 2} C., the coating amount of less than 2.5 g / ^{m 2} of two-ply, reduces the moisture retention The moist feeling disappears. On the other hand, if the coating amount exceeds 3.5 g / m ² , the water content is too high and the tissue paper is torn.

  By using the tissue paper having the above characteristics, printing using the water-soluble ink having the above characteristics, and including the moisturizing agent having the above characteristics in the tissue paper, the ink does not bleed and contains the moisturizing agent. Tissue paper is obtained.

  FIG. 2 shows a diagram of the printing moisturizing apparatus, and the method for producing the moisturizing tissue paper of the present invention will be described. The printing moisturizing device 50 includes a back layer tissue roll 20, a middle layer tissue roll 21, a surface layer tissue roll 22, a first printing unit 23, a second printing unit 24, a third printing unit 25, and a fourth printing from upstream to downstream. Next to the printing unit 26 and printing, a printing drying unit 27, a humectant application unit 28, and a tissue paper winding unit 29 are configured.

  When supplying tissue paper, if two sheets are stacked, two rolls of the back layer tissue roll 20 and the surface layer tissue roll 22 are used, and if three sheets are stacked, between the back layer tissue roll 20 and the surface layer tissue roll 22, The middle layer tissue roll 21 is arranged and three rolls are used.

  Printing can be any rotational printing application known in the industry. These include lithographic printing, letterpress printing, intaglio printing, gravure printing, screen printing, and preferably flexographic printing. The 1st printing part 23, the 2nd printing part 24, the 3rd printing part 25, and the 4th printing part 26 are arrange | positioned circumferentially, and the tissue paper sent is sent from the 1st printing part 23 to the 4th printing part 26. At the same time as moving on the printing drum 31, printing is performed sequentially. Each printing unit includes a printing surface and an ink tank that supplies ink.

  The printing drying unit 27 has a structure in which the tissue paper is spread long with a roller so that the printing surface of the tissue paper is in contact with air, and the printed ink is dried. It is desirable that the time from printing to applying the moisturizing agent is at least about 4 seconds. The humectant application unit 28 includes a humectant application surface and a humectant tank. The tissue paper take-up unit 29 is configured to take up the moisturized tissue paper at a slightly higher speed than during printing.

  A series of steps of moisturizing tissue paper will be described as follows. The two layers of the back layer tissue roll 20 and the surface layer tissue roll 22 overlap and enter the first printing unit 23. The first printing unit performs the first printing, and the second printing unit 24, the third printing unit 25, and the fourth printing unit 26 perform printing on tissue paper with different designs and colors. After printing, the tissue paper passes through the print drying unit 27, and the ink printed in the meantime is dried. After the printing is dried, the humectant is applied to the non-printing surface of the tissue paper in order to pass through the humectant applicator 28 for applying the humectant and prevent bleeding of the print. Thereafter, the tissue paper that has been printed and moisturized by the tissue paper winding unit 29 is wound.

  The tissue paper speed during printing and the winding speed after moisturizing are 202 m / min during printing, and the winding speed is 206 m / min.

  By making the winding speed after applying the moisturizing agent about 2% faster than the printing speed of the tissue paper, the tissue paper slightly stretched by the application of the moisturizing agent is wound up neatly without wrinkles.

  After applying the moisturizing agent, the wound tissue paper roll is sealed with a water-impermeable member made of a plastic film such as polyethylene, polypropylene, polyvinyl chloride, and polyester having a thickness of 0.02 mm, and placed for at least 24 hours. Moisturizing agent is blended throughout to improve the quality of moisturizing tissue paper. The roll of moisturizing tissue paper produced by this production method is then processed and filled into a tissue paper carton.

  The size of the moisturizing tissue roll is 1200mm in width and 1100mm in diameter. The film to be conditioned with the moisturizing agent is squared on the top of the roll after the wound tissue paper is placed on the pallet. Place a large film and roll it with film. The preservation method for making the humectant acclimatize is to keep the moisturizing tissue roll wound with a film on the pallet and store it on the floor or shelf to make the humectant familiar.

3, filled with moisturizing tissue paper 10 to the tissue paper carton 60 shows a diagram of a state in use. The moisturizing tissue paper 10 can be taken out from the tissue paper carton 60 as a pair of tissue paper.

Printing has been moisturizing facial tissue, characters and floral design to be printed for children, such as the local toy of symbols can be selected, it is capable of product development corresponding to the wide age group, that has been moisturized, For people who frequently use tissue paper due to pollinosis or rhinitis, the skin around the nose is not damaged, and the convenience for the user is increased.

Is a diagram illustrating an example of a moisturizing tissue paper. It is a schematic diagram showing a printing moisturizing device for producing a moisturizing tissue paper. Moisturizing tissue paper is a schematic diagram when using filled into tissue paper carton.

Explanation of symbols

2: surface tissue paper, 3: back layer tissue paper, 10: moisturizing tissue paper, 20: back layer tissue roll, 21: middle layer tissue roll, 22: surface layer tissue roll, 23: first printing section, 24: second printing Part, 25: third printing part, 26: fourth printing part, 27: printing drying part, 28: moisturizing agent application part, 29: tissue paper winding part, 31: printing drum, 50: printing moisturizing apparatus, 60: Tissue paper carton.

Claims (1)

A plurality of tissue papers are stacked, and among the plurality of tissue papers, the surface tissue paper is printed with water-soluble ink, and the surface tissue paper is coated with a moisturizing agent . A manufacturing method comprising:
After printing on the multiple sheets of tissue paper, the water-soluble ink is dried in a print drying unit, and then the humectant is applied to the non-printing surface of the multiple sheets of tissue paper ,
After the moisturizing agent is applied, the plurality of stacked tissue papers are sealed with a water-impermeable member, and the moisturizing tissue paper is adapted to the entire plurality of stacked tissue papers .

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