CN105886169A - Powder detergent bag and preparation method thereof - Google Patents

Powder detergent bag and preparation method thereof Download PDF

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Publication number
CN105886169A
CN105886169A CN201410771240.1A CN201410771240A CN105886169A CN 105886169 A CN105886169 A CN 105886169A CN 201410771240 A CN201410771240 A CN 201410771240A CN 105886169 A CN105886169 A CN 105886169A
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Prior art keywords
acid
sodium
detergent
bag
detergent powder
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Granted
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CN201410771240.1A
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CN105886169B (en
Inventor
杨庆香
胡瑜
贺波
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SHANGHAI WHITECAT SHAREHOLDING CO Ltd
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SHANGHAI WHITECAT SHAREHOLDING CO Ltd
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Abstract

The invention provides a powder detergent bag which is a quantitative solid detergent of which the packaging material is a water-soluble polymer. The content of the powder detergent bag is prepared from the following components in percentage by weight: 20-60% of inorganic base, 5-15% of nonionic surfactant, 8-15% of 4A zeolite, 5-10% of organic acid, 0-5% of sodium citrate, 0-1% of enzyme, 0-0.5% of whitening agent, 0-2% of polymer and the balance of mirabilite. Through formula structure optimization and technology control, the content powder detergent and the water-soluble film packaging material are in synergistic compatibility, and the powder detergent bag has the advantages of fast dissolution in water, good storage stability and short cleaning time.

Description

Detergent powder bag and preparation method thereof
Technical field
The present invention relates to daily detergent applications.More specifically, the present invention relates to a kind of detergent powder bag and Its preparation method.
Background technology
Polyvinyl alcohol (PVA) water-soluble film, as a kind of packaging film material, pesticide, detergent, Application has been arrived in the fields such as food.Compared to other PP, PE, PVC film, the biological degradability of PVA film to get well, It is dissolved in noresidue after water, and eliminates a lot of trouble when packing for article, packaging can be taken apart directly Use, conveniently measure.At present, occurred in that PVA film is applied to the product of liquid detergent The green solidifying pearl of wave laundry, this series products need not contact detergent itself, according to laundry amounts first use when of use One or two, will not splash the when of use, easily, commercially be favored by a part of consumer.
At present in disclosed PVA water-soluble packed detergent patent, it is all about the water-soluble bag of liquid detergent Dress dissolving, detection method and the research of packaging molding thereof, water-soluble to PVA without reference to component in detergent powder The impact of packaging.As CN101517061A discloses a kind of detergent bag, this patent mainly solves detergent Middle spice hides problem to PVA film abnormal smells from the patient and can fragrance do not mention other through the problem of PVA film The impact that water soluble film is packed by detergent component.Liquid detergent composition and detergent powder have bigger difference, The acid-base value of two kinds of products has the biggest difference: general liquid detergent, mainly based on surfactant, contains A small amount of inorganic or organic salt auxiliary agent, for neutral or low alkalinity;Detergent powder surface-active contents is less than Liquid detergent, containing the raw materials such as more inorganic salts auxiliary agent such as inorganic alkaline raw material, Sulfates compounding and Become, be typically high alkalinity.PVA film has fabulous oil resistivity, organic solvent-resistant and carbohydrate etc., But highly basic, strong acid, chlorine radical and other can with PVA occur chemical reaction material (as Borax, boric acid, Some dyestuff etc.), thus PVA film is used as the detergent powder packaging compounding containing plurality of raw materials, need comprehensive Consider the recipe ingredient impact on PVA film, it is especially desirable to concern as to whether that the dissolubility to film and storage stability have Impact.
The regular powder commercially available by trial PVA film packaging and concentration powder, through constant temperature and humidity 37 DEG C 75% Storing January under humidity, the result almost compatibility all there is a problem, PVA film occurs that variable color, dissolubility are deteriorated Even can not dissolve.For the problems referred to above, the present invention is by the rational proportion of recipe ingredient and production technology Optimize and revise, get rid of influential component, the production technology of conservative control powder, improve PVA water soluble film and powder The compatibility of shape detergent, is more suitable for PVA water soluble film packaging than generally conventional detergent formula, can make powdery Detergent product shelf life of contracting for fixed output quotas is longer.
Summary of the invention
It is an object of the invention to provide a kind of detergent powder bag, it is desirable to provide one is done washing easily and used powder mode And solve conventional detergent powder formula and be not suitable for the situation of water-solubility PVA packaging film, by optimization of C/C composites structure With technology controlling and process make content detergent powder and PVA film can good compatibility so that use PVA film bag The detergent powder of dress is surrounded by well solubility property, good clean effect.
The present invention reaches goal of the invention by following technical method:
A kind of detergent powder bag, is packed by water soluble package material and detergent powder content and forms, and it is special Levy and be:
Described water soluble package material selection polyvinyl alcohol film or modified polyvinylalcohol thin film;
Described detergent powder content is formed by following components configuration:
Wherein: inorganic base selects sodium silicate, anhydrous partial silicon, metasilicate pentahydrate sodium, sodium carbonate, potassium carbonate and carbonic acid A kind of or the most several mixing in hydrogen sodium;
Fatty alcohol-polyoxyethylene ether selected by nonionic surfactant;
Organic acid selection citric acid, oxalic acid, linear dodecylbenzene sulfonic acid, tartaric acid and 1-hydroxyl ethylidene-1,1 '- A kind of or the most several mixing in di 2 ethylhexyl phosphonic acid (i.e. HEDP);
Enzyme selects the one or any several mixing in protease, lipase, cellulase, amylase. Brightening agent selects 4-4-stilbenesulphonic acid base diphenyl disodium (trade name CBS-X, CF-351) or hexichol Any in ethylene triazine amidodisulfonic acid sodium (trade name DMS, DMA-X, 2M/GLT, 33# brightening agent etc.) One or both mixture;
One in acrylate homopolymer, maleic acid-acrylic acid copolymer and Styrene And Chloroalkyl Acrylates that polymer is selected Or the most several mixing.
Described detergent powder bag, is characterized in that:
The thickness of water soluble package material is in 35 μm~50 μm;
Nonionic surfactant select carbon chain lengths 12~15 and ethylene oxide number 7~9 fatty alcohol polyoxy Vinyl Ether
Polymer is graininess.
The preparation method of described detergent powder bag, is characterized in that: implement as follows:
Put into inorganic base, surplus Natrii Sulfas, 3%~10% organic acid successively, in mixer after stir about 5min again Put into 0~5% sodium citrate, 0~2% polymer, 5~15% nonionic surfactant, 0~1% enzyme, 8~ 15%4A zeolite, 0~0.5% brightening agent, discharging after stirring;The hot-seal packing machine bag bled with Horizontal band again Dress up the cryptomere of 15g~35g or spherical parcel.
Detailed description of the invention
Embodiment 1
First in mixer, put into 20% sodium carbonate, 20% sodium bicarbonate, surplus Natrii Sulfas, 4% dodecyl successively Benzenesulfonic acid, 1%HEDP, put into again after stir about 5min 2% sodium citrate, 0.5% sodium polyacrylate, 11% The aliphatic alcohol polyether-7 of C12~C15,0.2% protease, 10%4A zeolite, 0.15%CBS-X, stirring is all Even rear discharging;Selecting the PVA film of low temperature water-soluble thickness 35 μm, the hot-seal packing machine bled with Horizontal band is packed Become the cryptomere of 15g-35g or spherical detergent parcel.
Embodiment 2
First in mixer, put into 26% sodium carbonate, 2% metasilicate pentahydrate sodium, 18% sodium bicarbonate, surplus successively Natrii Sulfas, 9% DBSA, 0.8%HEDP, put into again after stir about 5min 4% sodium citrate, 1.2% Horse propylene copolymer granule, the aliphatic alcohol polyether-9 of 8%C12~C14,0.15% protease, 0.10% cellulase, 10.5%4A zeolite, 0.20%DMS, discharging after stirring;Select the PVA of low temperature water-soluble thickness 35 μm Film, the hot-seal packing machine bled with Horizontal band is packaged into the cryptomere of 15g~35g or spherical detergent parcel.
Embodiment 3
First put into successively in mixer 24% sodium carbonate, 5% potassium carbonate, 15% sodium bicarbonate, surplus Natrii Sulfas, 8% DBSA, 1.6%HEDP, put into again after stir about 5min 2.5% sodium citrate, 0.8% gather Sodium acrylate, the aliphatic alcohol polyether-9 of 8%C12~C15,0.2% lipase, 0.2% protease, 9%4A zeolite, 0.15%CBS-X, discharging after stirring;Select the PVA film of low temperature water-soluble thickness 35 μm, take out with Horizontal band The hot-seal packing machine of gas is packaged into the cryptomere of 15g~35g or spherical detergent parcel.
Embodiment 4
First in mixer, put into 21% sodium carbonate, 25% sodium bicarbonate, surplus Natrii Sulfas, 4.8% dodecane successively Base benzenesulfonic acid, 0.5%HEDP, put into again after stir about 5min 3% sodium citrate, 0.5% sodium polyacrylate, 0.5% Maleic acid-acrylic acid copolymer granule, the aliphatic alcohol polyether-7 of 15%C12~C14,0.1% protease, 0.2 multiple Synthase, 12%4A zeolite, 0.10%CBS-X, 0.2%DMS, discharging after stirring;Selection low temperature is water-soluble The PVA film of thickness 35 μm, the hot-seal packing machine bled with Horizontal band is packaged into the cryptomere of 15g~35g or spherical Detergent parcel.
Embodiment 5
First put into successively in mixer 25% sodium carbonate, 2% anhydrous partial silicon, 16% sodium bicarbonate, surplus Natrii Sulfas, 6% DBSA, 1%HEDP, put into 2% sodium citrate, 0.5% polypropylene again after stir about 5min Acid sodium, 0.5% horse propylene copolymer granule, the aliphatic alcohol polyether-9 of 12%C12~C14,0.2% protease, 0.10% Cellulase, 13%4A zeolite, 0.2%CBS-X, discharging after stirring;Select low temperature water-soluble thickness 35 μm PVA film, the hot-seal packing machine bled with Horizontal band is packaged into the cryptomere of 15g~35g or spherical detergent is little Bag.
Solubility experiment: all make the square of specification 5cm × 5cm, 20g with PVA film by embodiment 1~5 and wash Clothing powder bag, selects three kinds of commercially available detergent to do matched group simultaneously, in 37 DEG C, 75% climatic chamber stores 0 Week, 2 weeks, 4 weeks, carry out solubility experiment.
Experimental technique: under room temperature, in the beaker of 1L add 800L tap water, put into 5em magnetic stir bar, Being placed on magnetic stirring apparatus, adjustment of rotational speed, for can form small whirlpool at the page, fixes rotating speed, surveys respectively Try the rupture time of each PVA detergent bag, it is judged that dissolve situation.Test result is as shown in table 1:
Table 1
Dissolubility 0 week 2 weeks 4 weeks
Embodiment 1 40sec 1min 1min32sec
Embodiment 2 45sec 1min22sec 2min04sec
Embodiment 3 39sec 1min10sec 1min46sec
Embodiment 4 42sec 1min 1min25sec
Embodiment 5 45see 1min25sec 2min28sec
Commercially available powder 1 49see 5min21sec 7min17sec
Commercially available powder 2 59sec 10min18sec Can not break
Commercially available powder 3 53sec 7min20sec 12min34sec
Finding out from the above, along with the prolongation of the time of storage, the PVA bag dissolubility equipped with commercial laundry powder is bright Aobvious being deteriorated, after storing surrounding, 1 detergent PVA bag can not break dissolving, and other 2 break and wash around Wash the time, so it is shorter to pack commercial laundry powder shelf life with PVA film.And the PVA laundry of embodiment 1~5 Powder bag is little along with the prolongation dissolubility change of the time of storage, thus can have longer shelf life.

Claims (3)

1. a detergent powder bag, is packed by water soluble package material and detergent powder content and forms, it is characterized in that:
Described water soluble package material selection polyvinyl alcohol film or modified polyvinylalcohol thin film;
Described detergent powder content is formed by following components configuration:
Wherein: a kind of or the most several mixing in sodium silicate, anhydrous partial silicon, metasilicate pentahydrate sodium, sodium carbonate, potassium carbonate and sodium bicarbonate selected by inorganic base;
Fatty alcohol-polyoxyethylene ether selected by nonionic surfactant;
Organic acid selects citric acid, oxalic acid, linear dodecylbenzene sulfonic acid, tartaric acid and 1-hydroxyl ethylidene-1, a kind of or the most several mixing in 1 '-di 2 ethylhexyl phosphonic acid (i.e. HEDP);
Enzyme selects the one or any several mixing in the mixture of a kind of or any several enzyme of protease, lipase, cellulase, starch enzyme.
Any one or the mixture of two kinds in 4-4-stilbenesulphonic acid base diphenyl disodium (trade name CBS-X, CF-351 etc.) or stilbene triazine amidodisulfonic acid sodium (trade name DMS, DMA-X, 2M/GLT, 33# brightening agent etc.) commodity selected by brightening agent;
A kind of or the most several mixing in acrylate homopolymer, maleic acid-acrylic acid copolymer and Styrene And Chloroalkyl Acrylates that polymer is selected.
2. detergent powder bag as claimed in claim 1, is characterized in that:
The thickness of water soluble package material is in 35 μm~50 μm;
Nonionic surfactant select carbon chain lengths 12~15 and ethoxymer distribution 7~9 fatty alcohol-polyoxyethylene ether polymer be graininess.
3. the preparation method of detergent powder bag as claimed in claim 1 or 2, is characterized in that: implement as follows:
Inorganic base, surplus Natrii Sulfas, 3%~10% organic acid is put into successively in mixer, 0~5% sodium citrate, 0~2% polymer, 5~15% nonionic surfactant, 0~1% enzyme, 8~15%4A zeolite, 0~0.5% brightening agent, discharging after stirring is put into again after stir about 5min;The hot-seal packing machine bled with Horizontal band again is packaged into the cryptomere of 15g~35g or spherical parcel.
CN201410771240.1A 2014-12-15 2014-12-15 Detergent powder packet and preparation method thereof Active CN105886169B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106566732A (en) * 2016-09-30 2017-04-19 奉化市瑶琴生物科技有限公司 Phosphorus-free, fluorescent agent-free and preservative-free super-concentrated capsule granule laundry detergent, preparation method and use method thereof
CN106675881A (en) * 2016-12-06 2017-05-17 钦州市高新技术产业服务中心 Powdered detergent bag and preparation method thereof
CN108315108A (en) * 2018-04-09 2018-07-24 深圳市科曼环保科技有限公司 A kind of environment-friendly highly efficient steel and iron parts dust remover
CN108893205A (en) * 2018-06-21 2018-11-27 界首市洁净日用品有限公司 A kind of capsule-type powder laundry detergent
CN109231401A (en) * 2018-08-29 2019-01-18 广州邦葳纺织助剂有限公司 A kind of heavy mental treatment agent and preparation method thereof
CN111819274A (en) * 2018-03-08 2020-10-23 埃科莱布美国股份有限公司 Solid enzyme detergent compositions and methods of use and manufacture thereof
CN115125067A (en) * 2022-06-28 2022-09-30 传化集团有限公司日用品分公司 Clothes detergent

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1112534A (en) * 1976-11-03 1981-11-17 John Pardo Detergent article for use in automatic dishwasher
US6303553B1 (en) * 2000-10-13 2001-10-16 Colgate-Palmolive Company Powdered automatic dishwashing cleaning system
US6451750B2 (en) * 2000-04-14 2002-09-17 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Water soluble package and liquid contents thereof
CN1426454A (en) * 2000-04-28 2003-06-25 宝洁公司 Pouched compositions
CN1426458A (en) * 2000-04-28 2003-06-25 宝洁公司 Method for treating stained materials
CN1426456A (en) * 2000-04-28 2003-06-25 宝洁公司 Pouched compositions
CN1273575C (en) * 2001-12-20 2006-09-06 雷克特本克斯尔有限公司 Water soluble container containing dry actives
CN101023160A (en) * 2004-09-17 2007-08-22 宝洁公司 Water-soluble, liquid-containing pouch
CN101484569A (en) * 2006-06-30 2009-07-15 荷兰联合利华有限公司 Laundry articles
CN102597201A (en) * 2009-10-09 2012-07-18 雷克特本克斯尔荷兰有限公司 Detergent composition
CN103343065A (en) * 2013-07-08 2013-10-09 山东丽波日化股份有限公司 Non-water-based high-active-substance-content clothing detergent, preparation method thereof and packaging bag therefor
CN103923775A (en) * 2014-04-08 2014-07-16 余姚市德派日用品有限公司 Household clothes-washing and dish-washing bag
CN106232792A (en) * 2014-02-27 2016-12-14 荷兰联合利华有限公司 Comprise the water solublity laundry capsule dropping particulate in low-level HEDP

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1112534A (en) * 1976-11-03 1981-11-17 John Pardo Detergent article for use in automatic dishwasher
US6451750B2 (en) * 2000-04-14 2002-09-17 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Water soluble package and liquid contents thereof
CN1426454A (en) * 2000-04-28 2003-06-25 宝洁公司 Pouched compositions
CN1426458A (en) * 2000-04-28 2003-06-25 宝洁公司 Method for treating stained materials
CN1426456A (en) * 2000-04-28 2003-06-25 宝洁公司 Pouched compositions
US6303553B1 (en) * 2000-10-13 2001-10-16 Colgate-Palmolive Company Powdered automatic dishwashing cleaning system
CN1273575C (en) * 2001-12-20 2006-09-06 雷克特本克斯尔有限公司 Water soluble container containing dry actives
CN101023160A (en) * 2004-09-17 2007-08-22 宝洁公司 Water-soluble, liquid-containing pouch
CN101484569A (en) * 2006-06-30 2009-07-15 荷兰联合利华有限公司 Laundry articles
CN102597201A (en) * 2009-10-09 2012-07-18 雷克特本克斯尔荷兰有限公司 Detergent composition
CN103343065A (en) * 2013-07-08 2013-10-09 山东丽波日化股份有限公司 Non-water-based high-active-substance-content clothing detergent, preparation method thereof and packaging bag therefor
CN106232792A (en) * 2014-02-27 2016-12-14 荷兰联合利华有限公司 Comprise the water solublity laundry capsule dropping particulate in low-level HEDP
CN103923775A (en) * 2014-04-08 2014-07-16 余姚市德派日用品有限公司 Household clothes-washing and dish-washing bag

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106566732A (en) * 2016-09-30 2017-04-19 奉化市瑶琴生物科技有限公司 Phosphorus-free, fluorescent agent-free and preservative-free super-concentrated capsule granule laundry detergent, preparation method and use method thereof
CN106675881A (en) * 2016-12-06 2017-05-17 钦州市高新技术产业服务中心 Powdered detergent bag and preparation method thereof
CN111819274A (en) * 2018-03-08 2020-10-23 埃科莱布美国股份有限公司 Solid enzyme detergent compositions and methods of use and manufacture thereof
CN111819274B (en) * 2018-03-08 2022-06-21 埃科莱布美国股份有限公司 Solid enzyme detergent compositions and methods of use and manufacture thereof
CN108315108A (en) * 2018-04-09 2018-07-24 深圳市科曼环保科技有限公司 A kind of environment-friendly highly efficient steel and iron parts dust remover
CN108893205A (en) * 2018-06-21 2018-11-27 界首市洁净日用品有限公司 A kind of capsule-type powder laundry detergent
CN109231401A (en) * 2018-08-29 2019-01-18 广州邦葳纺织助剂有限公司 A kind of heavy mental treatment agent and preparation method thereof
CN115125067A (en) * 2022-06-28 2022-09-30 传化集团有限公司日用品分公司 Clothes detergent

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