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Carrier material used for recording layer and its manufacturing method

A technology of carrier materials and pigments, applied in temperature recording methods, copying/marking methods, photosensitive materials, etc., can solve problems such as insufficient adhesion, and achieve the effect of saving polyolefins

Inactive Publication Date: 2005-03-16
FELIX SCHOELLER JR FOTO & SPEZIALPAPIERE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this carrier material is that there is not sufficient adhesion between the pigmented layer and the polyethylene layer extruded thereon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-10

[0033] The basis weight used is 162g / m 2 A standard film base paper made of hardwood sulfate pulp containing 100% by weight, and based on the pulp, 0.5% by weight of alkylketene dimer and 0.7% by weight of polyamide-polyamine epichlorohydrin resin, and oxidized starch sizing.

[0034] The base paper is used in non-compressed form, i.e. non-smooth, with a density of 0.84 g / cm 3 .

[0035] The various coatings were applied to the base paper using a curved blade arrangement and allowed to dry. The composition of the pigment layer is listed in Table 1.

[0036] Element

1

2

3

4

5

6

7

8

9

10

CaCO 3 (d 50％ =0.7μm)

30

30

30

100

-

-

30

50

-

70

Modified CaCO 3 *

-

-

-

-

-

-

-

-

30

-

clay 1 ** )

70

70

70

-

100

-

-

-

...

Embodiment 11-18

[0041] The base paper used in Example 1 was coated and dried in-line with the coating of Example 1 by means of a laminator. Application rate is 10g / m 2 . The composition is listed in Table 2.

[0042] Element

11

12

13

14

15

16

17

18

CaCO 3 * (d 50％ =0.7μm)

30

70

100

-

-

30

50

-

Modified CaCO 3

30

clay 1 ** )

70

30

100

70

clay 2 *** )

70

Talc

100

50

Styrene / Butadiene Latex

8

8

8

8

8

8

8

8

starch

6

6

6

6

6

6

6

6

Calcium stearate

0.8

0.8

0.8

0.8

0.8

0.8

0.8

0.8

Application weight (g / m 2 )

10

10

10

10

10

10

10

10

...

Embodiment 19

[0047] The base paper used in Example 1 is first coated with a conventional calcium carbonate solution containing 30% by weight by means of a film press, and the application rate is 12g / m 2 . After drying, it is covered in the next step with a pigment layer according to the invention (Table 1) at an application rate of 10 g / m 2 .

[0048] The base paper that is coated according to embodiment 1-19 uses the low density polyethylene (LDPE, 0.923g / m2) of 72% by weight 2 ), 15% by weight of titanium dioxide masterbatch (50% by weight LDPE and 50% by weight of titanium dioxide) and 13% by weight of other additives such as brighteners, calcium stearate and blue pigment mixture, with different application rates 28g / m 2 , 23g / m 2 、18g / m 2 and 13g / m 2 ), coated at extrusion speeds of 250 m / min and 350 m / min.

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Abstract

A support material comprises a raw paper that may be coated on at least one side with a synthetic resin, and the raw paper or the resin coating on the raw paper is provided at least on the front side with a pigment layer wherein the pigment layer contains at least about 5% by weight of a pigment with a narrow grain size distribution, whereby at least about 70% of these pigment particles feature a size of less than 1 mum and at least 40% by weight of these particles feature a grain size of 0.35 to 0.8 mum, or in that the pigment coating is a structured calcium carbonate, for example surface-modified, and both embodiments feature improved surface properties.

Description

technical field [0001] The invention relates to a carrier material for a recording layer, which according to one embodiment of the invention may be a resin-coated carrier material. Background technique [0002] Polyolefin-coated film support materials generally consist of a sized base paper which is coated with polyolefin on both sides, in most cases by extrusion coating. [0003] When extrusion coating base paper, due to the coating effect, pit-shaped flaws are formed on the surface of the polymer, called pits. When the chill roll rotates at a high speed, the air bubbles wrapped in the fine depressions on the surface of the chill roll cannot escape before contacting the hot resin. As a result, the wrapped gas cannot escape until the base paper is coated. Form pit-shaped pits. These surface defects have a negative influence on the required surface properties of the carrier material, such as smoothness, which are decisive for the quality of the image. [0004] Increasing t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/01B41M5/00B41M5/382B41M5/40B41M5/41B41M5/42B41M5/50B41M5/52D21H19/38D21H19/40D21H19/82D21H21/52D21H27/00G03C1/775
CPCD21H21/52D21H19/40D21H19/826G03C1/775B41M5/41D21H19/822B41M5/42D21H19/385B41M5/506B41M5/508Y10T428/273Y10T428/2991Y10T428/252Y10T428/258Y10T428/31902
Inventor 马蒂纳·维歇弗兰克·罗默曼
Owner FELIX SCHOELLER JR FOTO & SPEZIALPAPIERE
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