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Multilayer dissolvable solid article and method of making same

A technology for dissolving solids and products, applied in the direction of layered products, flat products, cosmetic preparations, etc., can solve the problems of increasing manufacturing cost and processing complexity, and exacerbating dissolution problems.

Inactive Publication Date: 2020-11-27
PROCTER & GAMBLE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such adhesives / binders and their application process not only lead to a significant increase in manufacturing cost and processing complexity, but also slow down the dissolution of multilayer structures in water and further exacerbate existing dissolution problems

Method used

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  • Multilayer dissolvable solid article and method of making same
  • Multilayer dissolvable solid article and method of making same
  • Multilayer dissolvable solid article and method of making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0279] Example 1: Different OCF structures in solid sheets prepared by different heating / drying devices

[0280] Wet premixes were prepared with the following surfactant / polymer compositions for laundry care as described in Table 1 below.

[0281] Table 1

[0282] (laundry care preparations)

[0283]

[0284] The viscosity of the wet premix composition as described in Table 1 was about 14309.8 cps. After aeration, such an aerated wet premix has an average density of about 0.25 g / cm 3 .

[0285] Flexible porous dissolvable solid sheet A of the present invention was prepared from the above wet premix as described in Table 1 using a continuous aerator (Aeros) and a rotary drum dryer using the following settings and conditions as described in Table 2 below :

[0286] Table 2

[0287] (tumble dry)

[0288]

[0289] In addition, a relatively flexible porous dissolvable solid sheet I was prepared from the above wet premix as described in Table 1 using a continu...

Embodiment 2

[0307] Example 2: Comparative Adhesion of Multilayer Dissolvable Solid Articles Formed from Sheets of Different Normalized Crystallinity Values resistance score and adhesion stability score

[0308] Wet premixes were prepared with the following surfactant / polymer compositions 1-5 as described in Tables 8-12 below:

[0309] Table 8

[0310] (1-Personal Care Preparations)

[0311] Chemical material (wet) weight / weight% (dry) weight / weight% Polyvinyl alcohol (polymerization degree is 1700) 8.1 23.5 glycerin 3.2 9.4 Sodium Laureth-3 Sulfate 1.5 4.4 Sodium Laureth-1 Sulfate 13.3 38.5 Sodium Lauroamphoacetate 5.9 17.1 Guar Hydroxypropyl Trimethyl Ammonium Chloride 0.4 1.2 citric acid (anhydrous) 1.0 2.9 water margin margin

[0312] Table 9

[0313] (2-Personal Care Preparations)

[0314] Chemical material (wet) weight / weight% (dry) weight / weight% Polyvinyl alcohol (polymeriz...

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Abstract

This invention provides a multilayer dissolvable solid article, which comprises two or more flexible, dissolvable, porous sheets. Each of such two or more sheets is characterized by a percent open cell content of from about 80% to 100% and an Overall Average Pore Size of from about 100 [mu]m to about 2000 [mu]m and comprises a water-soluble polymer. At least two adjacent sheets in such dissolvablesolid article are characterized by an adhesion score (AdS) of no less than 1, while the contacting surfaces of said at least two adjacent sheets are essentially free of adhesives. Preferably, the multilayer dissolvable solid article is essentially free of adhesives.

Description

technical field [0001] The present invention relates to dissolvable solid articles comprising multilayer flexible dissolvable porous sheets and methods of making the same. Background technique [0002] Flexible dissolvable sheets comprising surfactants and / or other active ingredients in a water-soluble polymer carrier or matrix are well known. Such sheets are particularly useful for delivering surfactants and / or other active ingredients when dissolved in water. Compared to traditional granular or liquid forms of the same product category, such sheets have better structural integrity, are more concentrated, and are easier to store, ship / transport, handle and handle. Compared to solid tablet forms of the same product category, such sheets are more flexible and less brittle, offering better sensory appeal to consumers. [0003] In order to deliver surfactants and / or other active ingredients in quantities sufficient to achieve the desired product function, it is desirable to u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/00A61K8/72B29D7/01
CPCC11D17/06C11D17/042A61K8/0233A61K8/8129A61K8/463A61Q19/10A61Q5/02A61K8/345B32B7/023B32B2266/02B32B2266/0242B32B2250/04B32B2255/26B32B2307/732B32B2307/714B32B2255/205B32B2307/72B32B3/266B32B2555/00B32B2250/22B32B2266/0221B32B2250/05B32B2307/546B32B2266/0257B32B2266/0278B32B5/32B32B2307/718B32B3/02B32B2307/402B32B2266/0264B32B2266/06B32B7/10B32B2250/02B32B2250/03C11D3/3753B32B5/18B32B38/06B32B38/145B32B38/04B32B2307/7166B32B2038/042C11D3/2065C11D1/146
Inventor 陈鸿兴罗伯特·韦恩·小格伦卡尔·戴维·马克纳马拉汤鸣冈田俊之陈虹伶黄旭加布里埃尔·亚历杭德罗·诺盖拉梅萨蒋敏
Owner PROCTER & GAMBLE CO