SOS Square Bottom Paper Bag Making Machine

Automatic SOS square bottom bag machine for food kraft bags, speed up to 200 pcs/min. Supports printed & plain paper, auto gluing, creasing, bottom folding, counting. 3 models PBFD-220 / 330 / 450 available.(SOS paper bag making machine, square bottom paper bag machine, food takeaway kraft bag maker, automatic paper bag equipment)

Properties And Uses

PBFD Series SOS Square Bottom Paper Bag Making Machine

This fully automatic SOS square bottom bag machine is specialized equipment for producing food-grade square base paper bags. It integrates full-process automatic functions: unwinding, central gluing, fixed-length cutting, bottom creasing, automatic bottom opening, bottom gluing, folding and finished bag stacking. Compatible with both blank and pre-printed paper rolls, the equipment runs stably with built-in tension control and SICK color mark tracking system. Three sizes cover small, medium and large food bag production. Widely used for bakery, fast food, snack and fruit eco packaging, it realizes high-volume continuous production with minimal manual intervention.

product-1009-94

Standard Working Flow

Unwind raw paper roll via pneumatic lifting stand
Auto constant tension paper conveying
Central forward gluing & tube forming
Fixed length cutting + bottom creasing
Automatic bottom opening & bottom gluing
Square bottom folding & sealing
Auto counting & finished bag stacking

Optional Custom Functions

Window punching unit
Hot stamping attachment
Handle hole punching device
Online flexo printing matching unit

Main Technical Parameters

Product drawing

Name	SOS paper bag making machine
Model	PBFD-220	PBFD-330	PBFD-450
Cutting length	190-430mm	270-530mm	270-530mm
Paper bag width	80-220mm	120-330mm	220-430mm
Bottom width	50-105mm	60-180mm	90-180mm
Paper bag thickness	50-150g/㎡	60-150g/㎡	80-150g/㎡
Mechanical speed	30-260pcs/min	30-220pcs/min	30-220pcs/min
Paper bag speed	30-200pcs/min	30-180pcs/min	30-150pcs/min
Paper roll width	290-710mm	380-1050mm	660-1290mm
Paper diameter	1300mm
Inner diameter of paper	76mm
Total power	380V 3phase 4line 11.5kw	380V 3phase 4line 15kw
Total weight	6000kg	8500kg	9000kg
Overall size	820035002200mm	1000037002200mm	1000038002200mm

Note:Actual running speed changes based on paper gram, glue type, bag size and operator proficiency.

Core Machine Features

1.Full Integrated Automatic Workflow

One-line completion of feeding, gluing, cutting, creasing, bottom folding and collection; only one operator required for paper replenishment.

2.Wide Paper Compatibility

Works with kraft paper, white cardboard, coated paper and paper-plastic composite sheets; finished bags are biodegradable, meet global food packaging standards.

3.Stable Continuous High Output

Reliable mechanical transmission supports long-shift operation, daily maximum output nearly 86,000 pieces for mass food packaging orders.

4.Intelligent Protection System

Equipped with auto tension adjustment, real-time counting and fault auto-stop function to avoid paper deformation, jamming and waste.

5.Precise Color Mark Tracking

Imported SICK photoelectric sensor ensures accurate positioning for pre-printed logo paper rolls, no pattern offset.

6.Flexible Size Switching

Quick mold replacement and touch screen parameter adjustment to produce multiple bag sizes on one machine.

Video Introduction

Below is the workflow of the paper bag machine.

Application Scope

Catering Industry: Burger bags, bread bags, fried food takeaway bags, fruit & dried fruit packaging
Retail Supermarket: Square bottom shopping SOS kraft bags
Gift & Snack Factory: Disposable eco packaging bags
Food Packaging Plant: Mass standardized food bag production

Detail Image

Pneumatic Paper Reel Lifting Device Precise color mark tracing system

Integral tube forming adjustment structure- mechanical transmission parts

paper bag Sample

square bottom paper bag-1 square bottom paper bag-2

square bottom paper bag-

Why choose US?

1.Multi-style Production Capacity： Apart from standard square SOS bags, it can be modified to produce flat bags, sharp bottom bags and handle bags, meeting diversified packaging demands of food, garment and gift industries.

2.Modular Structure & Low Maintenance：Standardized replaceable parts such as glue rollers and cutting blades, easy sourcing and low after-sales cost.

3.Customized Configuration Service： We design exclusive machine layout according to your daily output, bag types and factory space to avoid capacity surplus or shortage.

4.Complete After-sales Support： Full technical guidance, installation training and spare parts supply to help your packaging business expand steadily.

Packaging and Delivery

The whole machine is disassembled and packed with thick export wooden cases with shockproof foam and moisture-proof film inside, safe for sea and air long-distance transportation. Delivery will be arranged according to the signed contract schedule.

SOS paper bag making machine, square bottom kraft bag machine, automatic food takeaway bag maker, PBFD series paper bag equipment

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